later this sunday morning, what made nelson mandela a great man. >> osgood: we will consider mandela's place among the greats of history. and then turn to the manner of centuries beneath the square, a symbol of the freemasons, just who the masons are and who, what they do are one of the mysteries mo rocca will investigate. >> it is the world's oldest fraternity known for its rituals symbols and secrecy. >> what would happen if i found out the secret handshake and i weren't a mason. >> nothing. >> would you have to kill me? >> we might take you out and buy you a beer. >> ahead on sunday morning, meet the masons. >> osgood: ethan hawke is an actor who can play just about any type of role, not to mention play a pretty good game of pool as we find out. >> >> he is a member of the dead poet society. and a boy who meets a girl. >> it was about kiss, it was like blowing a kiss, you weren't actually french kiss something. >> but off screen you can catch ethan hawke's romantic side around the pool table. >> ahead on sunday morning. >> shooting pool with ethan hawke. >> wow! >> nicely done. >> n